#include <iostream>
#include "Common.hpp"
#include "InetAddr.hpp"

        
void Usage(std::string proc)
{
    std::cerr << "Usage: " << proc << " server_ip server_port" << std::endl;
}

// ./TcpClient server_ip server_port
int main(int argc, char *argv[])
{
    if(argc != 3)
    {
        Usage(argv[0]);
        exit(USAGE_ERR);
    }
    std::string serverip = argv[1];
    uint serverport = std::stoi(argv[2]);

    //build the socket
    int sockfd = socket(AF_INET, SOCK_STREAM, 0);
    if(sockfd < 0)
    {
        std::cerr << "socket err" << std::endl;
        exit(CONNECT_ERR);
    }

    //直接向目标服务器发起建立连接的请求(无需bind，listen，accept)
    InetAddr serveraddr(serverip, serverport);
    int n = connect(sockfd, serveraddr.NetAddrPtr(), serveraddr.NetAddrLen());
    if(n < 0)
    {
        std::cerr << "connect error" << std::endl;
        exit(CONNECT_ERR);
    }

    //echo client
    while(true)
    {
        std::string line;
        std::cout << "Please Enter: ";
        std::getline(std::cin, line);

        write(sockfd, line.c_str(), line.size());

        char buffer[1024];
        ssize_t size = read(sockfd, &buffer, sizeof(buffer) - 1);
        if(size > 0)
        {
            buffer[size] = 0;
            std::cout << "server echo: " << buffer << std::endl;
        }
    }
    close(sockfd);

    return 0;
}